Disk harrow.



L. H. KAUPKE.

DISK HARROW.

APPLICATION man JUNE 3. 1914.

1,270,299. Patented JllIie 25, 1918.

2 SHEETS-SHEET l.

L. H. KAUPKE.

DISK HARROW. APPLICATION HLED JUNE 3, I9l4.

1,270,299. Patentd June 25, 1918.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

LEE ,H. KAUPKE, OF ROCK ISLAND, ILLINOIS, ASSIGNOR TO BOOK ISLAND PLOW COMPANY, OF ROCK ISLAND, ILLINOIS, A CORPORATION OF ILLINOIS.

DISK 'HARROW.

Specification of Letters Patent.

Patented June 25, 1918.

- Application filed lune 3, 1914. Seria1iNo.-842,'544.

To all whom itmay concern:

Be it known that I, LEE H. KAUPKE, a citizen of the United States of America, and resident of Rock Island, Rock Island county, Illinois, have invented a certain new and useful Improvement in: Disk Harrows, of which. the following is a specification.

My invention relates to improvements in disk harrows, and has for its object the provision of improved means for applying pressure to the gangs. By my invention the gangs are pivoted for angling at-their inner ends sothat the depressing pressure is applied tothe pivoted point of the gangs.

Furthermore, I provide a construction in which the pressure is maintained constant regardless of the angling of the disk gangs, and in: which a leveris provided for controlling .the application of the pressure, which :lever is pushed forward for applying pressureand so is out of the way of the driver.

These and other objects of my invention will be more readily understood by having reference to the accompanying drawings in which I have illustrated one specific embodiment of'my invention, in which- Figure 1. is a side elevation, partly in section, of a machine embodyingthe features of my invention.

Fig. 2 is a view takenon the line--2-2 of Fig. 1, looking in the direction of the arrows.

Fig. 3 is a sectional view taken 'on. the

line 33 of Fig. 2, looking in the direction of the arrows.

As illustrated, the machine comprises two disk gangs 5 and 6, carried by the yokes 7 and 8 respectively. The gangs are pivotally connected at their inner ends to the draw bars 9 and 10, thereby permitting the disks to be angled. The angling of each disk gang is controlled by means of a rock shaft 11 mounted on the frame, which shaft carries a downwardly extending arm 12, to which the rearwardly extending link 13 is connected, the opposite end of which link is connected to the disk gang. The rotation of the rock shaft 11 is controlled by means of the hand lever 14.- which carries the usual spring finger which engages with the rack 15 for locking the lever in its various po. sitions.

The forward end of the draw bars 9 and 10 are pivotally connected to a casting 16 secured to the stub tongue 17. In order to provide means for applying pressure to the gangs, and to PI'OVl(lQ IDQiLl1S whereby this pressure can be readily regulated by the driver, I mount a saddle plate 18 on the draw bars 9 and 10, which saddle plate is pivotally connected to one end of a lever 19. The opposite end of this lever 19 is pivotally connected to a link 20, the lever 19 being fulcrumed at a mid-point in'the casting 21 carried by the stub tongue 17. The opposite end of the link 20 is connected to one arm of a bell crank-lever 22, to the other arm of which the hand lever 23 is secured. This lever carries theusual spring finger 2% which. engages with the rack 25 for holding the lever in. its adjusted positions.

With this construction it will. be seen that when the lever 23 is pushed forward the saddleplate is forced downward, thus placing a suitable depressing pressure on the disk: gangs. It will be noticed that the means for exerting this pressure are entirely independent of the particular angling of the disk gangs. This is due to the fact that the pressure is applied at the fixed or pivotal point of the gangs, and also to the fact that the pressure is applied to a longitudinally fixed draw bar. In this manner a fixed depressing pressure can be maintained regardless of the angling of the disk. gangs.

Furthermore, it will be noticed that by havingthe lever 19 fulcrumed at its mid-point the-hand lever 23 is permitted to be moved forward out of the way of the driver in applying the pressure to the disk gangs.

While I have illustrated one particular embodiment of my invention, it will be understood that I do not wish to be limited to the exact construction shown and described but that various changes and modifications will readily suggest themselves to those skilled in the art.

What I claim as my invention is:

1. In a disk harrow, a disk gang pivotally mounted at its inner end, and means including a longitudinally fixed draw bar for applying a depressing pressure to the pivotal point of said gang.

2. In a disk harrow, a disk gang pivotally mounted at its inner end, means including a longitudinally fixed draw bar for applying a depressing pressure to the pivotal point of said gang, and a hand lever for controlling the appl cation of said pressure,

3. In a disk barrow, a pair of disk gangs, a pair of draw bars pivotally connected to the inner endsof said gangs, means angling said disks about said pivotal connections, a saddle plate spanning said draw bars, and means controlled by a hand lever for exerting a depressing pressure on said saddle plate.

4:. In a disk harroW, a pair of disk gangs,

a pair of draw bars pivotally connected'to the inner ends of said gangs, means for angling said disks about said pivotal connections, a saddle plate spanning said draw bars, and means controlled by a hand lever for exerting a depressing pressure on said saddle plate, said means including a lever fulcrumed at a mid-point and having one end connected to said saddle plate and th other .end to said hand lever.

5. The combination of a frame, adrawbar carried by said frame, a disk gang pivotally mounted at its inner end on said drawbar, means for swinging said gang horizontally about said pivotal point to vary its angle, and regulable pressure-applying mechanism acting on said draWbar for varying the pressure on the inner end of the gang.

6. The combination of a frame, wheel supports for the forward end thereof, a pair of movable disk gangs pivotally supported at the rear end of the frame, drawbar mechanism pivotally mounted at its forward end on said frame and pivotally attached at its rear end to the pivotal ends of said gangs, means controlled by the operator for swinging the gangs about the pivotal point, and

a regulable operator-controlled mechanism acting on said drawbar mechanism for adjusting the pressure on the gangs.

7. In a disk harrow, a disk gang pivotally mounted at its inner end about a vertical 7 Copies of this patent may be obtained for for v axis, said pivotal point being held against movement in the direction of the line of draft, and lever mechanism for applying a depressing pressure to the pivotal point of said gang.

8. In a disk harrow, a disk gang pivotally mounted at its inner end, means for an ling said disk about said pivotal inner end, an operating lever and means controlled thereby for applying a constant predetermined pressure to said pivotal point irrespective of the angling position of said gang.

9. In a disk harrow, ,a disk gang, means for variably applying pressure to said gang, said means including a drawbar connected at one end to said gang and held against longitudinal movement, an operating mem her, and an intermediate lever fulcrumed at a mid-point and having one end thereof operatively connected to said operating memher and the other end thereof engaging with said draw-bar.

10. In a disk barrow, a frame, a disk gang, means for variably applying pressure to said gang, said means including a drawbar pivotally connected at one end to the inner end of said gang and pivotally connected at its opposite end to said frame whereby it is held against longitudinal movement, an operating member and an intermediate lever fulcrumed at a mid-point and having one end thereof operatively connected to said operating member, and the other end thereof engaging with an intermediate point of said draw-bar.

Signed by. me at Rock Island, Illinois, this 23rd day of May, 1914.

LEE H. KAUPKE.

Witnesses: W. C. SCHMIDT, H. E. SANGREN.

five cents each, by addressing the commissioner of Patents, Washington, D. G." 

